Summary

A simple remix to use an old Dell laptop powersupply I had laying around.

I believe the same barrel connector is used on many other older laptops like Lenovo, Acer etc.
https://a.aliexpress.com/_Exg1Ysw

I used a adapter cable from Aliexpress and cut one end of, the wires are pretty thin, but even loaded with 90 watt's the voltage drop was only around 1.5 volts.

I also made a version for a smaller switch since that's what I already had laying around.